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本文主要论述了我国渔业水域环境近况及其与水产养殖的关系,最后综合各种水产养殖用水净化技术,提出了可持续发展的养殖模式及水质处理技术。 相似文献
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海峡两岸渔业在加入WTO后的合作前景初探 总被引:1,自引:0,他引:1
本文介绍了台湾海峡两岸渔业的生产、贸易以及加工各方面情况,其中包括两岸渔船的分布海域、作业对象以及两岸远洋渔业和养殖业各自发展的特点等。文章认为两岸的水产品贸易将成为今后两岸各自的进出口贸易中的一个闪亮点,这很大程度上得益于两岸贴近的风土习俗和地理因素等。文章阐述了WTO的基本准则对即将入世的两岸渔业直接贸易的影响。并对两岸渔业在分别加入WTO后,将面临什么样的机遇和挑战,以及今后渔业合作的发展前景提出初步的探讨。 相似文献
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湖北省渔业结构变化与渔业产出关系分析 总被引:1,自引:0,他引:1
水产品种类繁多,按照不同的标准可以分为内陆水产品和海洋水产品,养殖水产品和捕捞水产品,水生动物产品和水生经济植物产品等.具体细分后,水产品还可以分为鱼、虾蟹、贝类、莲子、莲藕、菱角、芡实以及莼菜等. 相似文献
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以坛紫菜 (Porphyra haitanensis)为原料,提取抗紫外辐射物质类菌胞素氨基酸 (Mycosporine-like amino acids, MAAs),通过紫外可见光谱、液质联用对其进行表征,研究了化妆品体系中的各因素 (pH、光照、温度、防腐剂、抗氧化剂、功能性添加剂) 对MAAs化合物稳定性的影响。结果表明,坛紫菜中MAAs类化合物的种类为Shionrine和Porphyra-334;MAAs在pH 6的微酸环境中稳定性最高;紫外照射10 h能使溶液的吸光度下降94.4%;48 ℃高温放置56 d后吸光度下降了28.3%;48 ℃下添加小分子肽溶液的吸光度提高了82%,添加透明质酸溶液的吸光度提高了18.6%,能显著增强MAAs化合物的稳定性;其他常用防腐剂、抗氧化剂和功能性添加剂对MAAs的稳定性无明显影响。 相似文献
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Generating information for aquaculture development: The art and science of economic policy modelling
Gilbert Sylvia 《Aquaculture Economics & Management (Blackwell Science)》2013,17(1-2):87-98
Abstract The rapid growth of aquaculture and concerns about economic and ecological ‘sustainability’ have focused attention on industry externalities. Developing institutions which ‘sustain’ aquaculture will require skills in the ‘art and science’ of public policy modelling. Analysis of existing approaches demonstrates that no single modelling paradigm is ‘best’ for all aquaculture policy situations. Modelling approaches other than cost‐benefit including multiobjective analysis may be more appropriate if the objective of the modeller is to improve the effectiveness of the policy process itself. A review of the relatively small but growing literature on aquaculture policy models reveals a wide range of issues and approaches. In general, economic models have focused on the single objective of maximizing efficiency; in contrast, models used in actual aquacultural policy and planning focus on controlling environmental pollution. The findings suggest that economic models have not yet played a significant role in aquacultural policy development. This raises concerns that myopic views of ‘sustainability’ will result in institutions which do not promote socially efficient aquacultural industry growth. 相似文献
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加强水产机械化工程学科建设,推动渔业现代化 总被引:1,自引:0,他引:1
中国渔业的现代化,是以可持续发展的质量、效益型产业经济替代目前的数量和资源消耗型经济模式,进而实现由世界渔业大国向渔业强国的转变,成为国家现代化建设、农业产业结构调整,以及农村现代化建设、农民富裕的重要的推动力量。在渔业的现代化进程中,生产的产业化和技术的工业化是产业结构调整的主要目标,渔业的机械化是实现这一目标的重要支撑和体现,以机械化为主要内容的现代工程技术是渔业实现机械化的关键性技术。 相似文献
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E. North 《Aquaculture Research》1983,14(4):187-198
The trout fishery at Draycote Water was investigated during the 1980 fishing season. Fish stocked were batch-marked according to the date of introduction by freeze branding, and catch data were obtained by the cooperation of anglers. Population estimates were made at the end of the fishing season using gill nets and mark-recapture techniques. Of the 32,960 marked brown and rainbow trout stocked, 69.8% were caught and declared by anglers. Returns of rainbow trout were better (78.1%) than those of brown trout (44.2%). Over 90% of all fish caught were taken within 45 days of stocking. Catch per unit effort fluctuated widely but was closely associated with stockings of fish. Catchability (Q) of stocked fish was found to diminish rapidly with time after stocking. At the end of the fishing season the estimated population of marked trout was 4045 (2 × SE = 250), compared with a theoretical number (stock less total catch) of 10,802, giving a mean daily apparent natural mortality, made up of the true natural mortality plus the undeclared catch, of 1.36%. 相似文献
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本文以2002年辽东湾北部海区的调查数据为主,参考部分2000~2003年的数据,对辽东湾北部海区的初级生产力进行了估算,为了分析和讨论的方便,将辽东湾北部海区人为划分为三部分,东部的初级生产力最高,8月份平均为222 88mg·C/m2·d;中部区域初级生产力最低,10月份为46 39mg·C/m2·d。不同区域的初级生产力的差距较大;如单独估算20~30站位的初级生产力,则分别为:4月平均192 43mg·C/m2·d,6月482 69mg·C/m2·d,7月274 8mg·C/m2·d,9月252 52mg·C/m2·d,远远高于各站位的平均值。辽东湾北部海区的初级生产力具有明显的区域特征,与渔业资源关系密切。 相似文献
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《现代渔业信息》2006,21(2)
F F A推动以生态系统为基础的金枪鱼渔业管理南太平洋论坛(FFA)的17个岛国对各成员国水域内的金枪鱼资源,提出了以生态系统为基础的渔业管理。今年7月,FFA工作人员、FFA成员国官员及亚太地区的渔业科学家们齐聚澳洲的考夫斯港(CoffsHarbour),召开第一次工作小组会议,以推动和执行以生态系统为基础的渔业管理(Ecosystem-BasedFisheriesManagementEBFM)的理念。一项针对中西太平洋金枪鱼渔业制订的实施方针即将出炉。FFA局长FeletiTeo表示:新的金枪鱼渔业管理方式将会以既有的传统方式为基础。太平洋岛国人民为捍卫他们的海洋奋斗… 相似文献